How does "Memento" use the codes and conventions of the thriller genre

"Memento" uses many of the codes and conventions of the thriller genre such as narrative enigmas which is when the film is making the audience ask questions which may or may not be answered. This is shown in "Memento" as the present is in black and white and the past is in colour. This asks questions because it's hard to work out what is actually going on and creates a confusion between time and space so the audience ask "What's the actually happening now and what happened in the past?" Another way which "Memento uses the codes and conventions is the idea of iconic props, which is a prop typical to the genre of the film. In "Memento" the iconic rop of the thriller genre is the pistols that are used as this represents crime and creates suspense which is often seen in a thriller. Another way is that "Memento" Implies elements of ambiguity which is when something has more then one meaning for example Lennard uses the Polaroid camera photographs as his memory's but the pictures are also used to tell the audience the plot like a jigsaw puzzle as they all fit together towards the end. "Memento" also uses elements of film noir as we are shown the idea of a rugged main character who is slightly mysterious which is Lennard along with shadowy low key lighting and sets to emphasis the blackness of the film. There is also elements of a femme fatal who is Natalie as she starts off being portrayed as good but the audience also question if she is really out to help him or if she is trying to guide him into more danger so we question if she is good or bad and later find out the answer to that. Another convention "Memento" uses is the idea of voyeurism which is the idea that we are watching someone else's personal life passively and that we are intruding as we would not do that in real life. This is shown in "Memento" when Lennard is on the phone, he is having a personal conversation with someone and we are intruding in on his conversation and trying to figure out what he's talking about and who he is talking too. "Memento" uses lots of elements of foreshadowing as it is telling the story in the future and the past at the same time, so when the audience are shown a picture which we haven't seen happen yet it is dropping a hint to the plot we have yet to see and makes the audience keep trying to guess what's going to happen next and work out the ending for themselves. Finally "Memento" uses the conventions of a thriller through its camera work as it shows constant pans and tilts to tease the audience and make them ask questions for what is going on for example in the montage scene there is many pans and tilts so the audience can't work out what is going on.